Adult Acne: Why It Happens and How a San Francisco Dermatologist Treats It

If you thought acne was supposed to end after high school, you are not alone—and you are not wrong to be frustrated.

Adult acne affects about 50% of women and 25% of men in their 20s and 30s, and it can continue into the 40s and even 50s. The causes of adult acne are different from teenage acne, which means the treatment approach needs to be different as well.

If you are dealing with persistent breakouts, a board-certified dermatologist in San Francisco can help identify the underlying cause and create a treatment plan tailored to your skin.

Why Adults Get Acne

Adult acne is driven by a different set of factors than the acne most people experienced during their teenage years.

Common triggers include:

Hormonal fluctuations (menstrual cycles, pregnancy, perimenopause, or stopping birth control)
Chronic stress
Inflammation and gut health factors
Heavy or comedogenic skincare and cosmetic products
Genetics

The pattern of adult acne also tends to look different.

Teen acne typically appears on the forehead, nose, and upper cheeks, while adult acne most often shows up along the jawline, chin, and lower cheeks.

This distribution is often a clue that hormones are playing a major role.

What Over-the-Counter Acne Products Can (and Cannot) Do

Many people attempt to treat adult acne with over-the-counter skincare products before seeing a dermatologist.

Common ingredients that can help mild acne include:

Salicylic acid
Benzoyl peroxide
Adapalene (Differin)

These products can improve mild breakouts, but for moderate or cystic adult acne, they often are not enough.

Many patients come to a dermatology appointment after spending hundreds of dollars on products that never addressed the root cause of their acne.

“The biggest mistake I see is patients layering too many active products at once. They end up with irritated, stripped skin on top of active acne, which makes everything worse. Sometimes the first step in treatment is actually simplifying the routine.”
— Dr. Caren Campbell, MD

Prescription Acne Treatments That Actually Work

When acne persists, a board-certified dermatologist can prescribe treatments that target the underlying cause of breakouts.

Some of the most effective options include:

Topical Retinoids

Medications such as tretinoin and tazarotene are considered the gold standard for acne treatment. They prevent clogged pores, improve skin texture, and stimulate collagen production.

Medicated Washes

5% Sulfur and Benzoyl Peroxide Washes used daily on the face, chest and back can help kill acne causing bacteria and prevent clogged pores.

Spironolactone

Spironolactone is an oral medication that blocks androgen hormones and is particularly effective for hormonal acne in adult women.

Oral Antibiotics

These medications help control inflammatory acne and are typically used short-term alongside topical treatments.

Isotretinoin (Accutane)

For severe or scarring acne that does not respond to other treatments, isotretinoin can provide long-term remission.

Chemical Peels

In-office chemical peels accelerate skin cell turnover and help clear congested pores.

Cortisone Injections

For large painful cysts, cortisone injections can reduce inflammation and flatten the breakout within 24–48 hours.

When Acne Is Actually Rosacea

Many adults who think they have acne actually have rosacea, or a combination of both conditions.

Rosacea can cause:

Redness
Bumps that resemble acne
Flushing
Sensitive skin

Because rosacea requires different treatment, using standard acne products can sometimes make the condition worse.

A dermatologist can determine whether breakouts are caused by acne, rosacea, or both, and tailor treatment accordingly.

How Long Acne Treatment Takes to Work

One of the most challenging aspects of acne treatment is patience.

Most prescription treatments take 6–12 weeks to produce noticeable improvement. Some treatments, particularly retinoids, may initially cause a temporary worsening before the skin improves.

Working with a dermatologist helps patients stay on track and avoid stopping treatment right before it begins to work.

Treating Adult Acne in San Francisco

Living in San Francisco presents unique challenges for acne-prone skin. Environmental stress, busy schedules, travel, and constant exposure to changing weather conditions can all influence breakouts.

A personalized treatment plan from a dermatologist in San Francisco can help address both the underlying causes of acne and the factors unique to your lifestyle.

Looking for Acne Treatment in San Francisco?

Dr. Caren Campbell is a board-certified dermatologist in San Francisco’s Union Square who specializes in treating adult acne and hormonal acne.

Her approach focuses on identifying the root cause of breakouts and creating customized treatment plans rather than one-size-fits-all solutions.

👉 Book an Acne Consultation to start building a treatment plan tailored to your skin.

Dr Campbell sees patients in her San Francisco office and virtually for patients in New York, Texas and Arizona.

Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice. Treatment plans should always be individualized by a board-certified dermatologist.